"use strict";

function Event() {
  this.events = {};
}

Event.prototype.on = function (eventType, callBack) {};

Event.prototype.off = function (eventType, callBack) {};

Event.prototype.emit = function (eventType) {};

var callBack1 = function callBack1() {
  console.log(111);
};

var events = new Event();
events.on('click', events);
console.log(events);